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HCLTech ETL Tester Interview Questions and Answers for Experienced
HCLTech ETL Tester Interview Experiences for Experienced
1 interview found
Anonymous
I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
(4 Questions)
- Q1. Explain inner join with an example
- Ans.
Inner join combines rows from two tables based on a related column between them.
Inner join returns only the rows that have matching values in both tables
It is used to retrieve data that exists in both tables
Example: SELECT Orders.OrderID, Customers.CustomerName FROM Orders INNER JOIN Customers ON Orders.CustomerID = Customers.CustomerID;
- Q2. Explain cross join with an example
- Ans.
Cross join combines each row from one table with each row from another table.
Cross join produces a Cartesian product of the two tables involved.
It does not require any common columns between the two tables.
It can result in a large number of rows if the tables are big.
Example: SELECT * FROM table1 CROSS JOIN table2;
- Q3. Provided Employee Table and asked to do a self join
- Q4. Explain different types of data validation and checks performed in ETL testing
- Ans.
Different types of data validation and checks in ETL testing include schema validation, data completeness checks, data transformation checks, and data quality checks.
Schema validation ensures that the data conforms to the expected structure and format.
Data completeness checks verify that all expected data is present and accounted for.
Data transformation checks ensure that data is accurately transformed according to bus...
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I applied via Campus Placement and was interviewed before May 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Tell me about yourself
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Apr 2020. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. Basic questions only ... regarding job and experience
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Apr 2021. There were 2 interview rounds.
(3 Questions)
- Q1. Spring container and beans
- Q2. Annotations used in Springboot
- Ans.
Annotations are used in Springboot to simplify configuration and reduce boilerplate code.
Annotations are used to define the behavior of Spring components
They can be used to define the scope of a bean, inject dependencies, and handle exceptions
Some commonly used annotations include @Component, @Autowired, and @ExceptionHandler
- Q3. Java 8 New Features and explanation
- Ans.
Java 8 introduced several new features including lambda expressions, streams, and default methods.
Lambda expressions allow for functional programming and simplify code.
Streams provide a way to process collections of data in a functional style.
Default methods allow for adding new methods to interfaces without breaking existing implementations.
Other features include the Optional class, Date and Time API, and Nashorn Java
(1 Question)
- Q1. What is your expected package
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Skills evaluated in this interview
I applied via Walk-in and was interviewed before Feb 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Its for FP&A process and the major questions were from the basics of FP&A. How it starts and how its ends and Previous job roles.
Interview Preparation Tips
I applied via Job Fair and was interviewed before Feb 2021. There were 2 interview rounds.
(1 Question)
- Q1. Basic accounting methods and journals
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Feb 2021. There were 2 interview rounds.
(1 Question)
- Q1. Questions on Salesforce Basics. One can learn all great features in Salesforce.com but we must know the basic admin functionalities and features in Saleforce.
(1 Question)
- Q1. The questions will be on your career, Resume. They will look for story telling skills, can you be a team player and individual player, etc. Can be technical as well.
Interview Preparation Tips
I applied via Walk-in and was interviewed in Jan 2019. There were 4 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Work experience in current organisation
- Q2. What is unique about you
- Ans.
I have a unique combination of analytical skills, creativity, and strong attention to detail.
I have a background in both finance and graphic design, allowing me to approach problems from multiple perspectives.
I excel at finding innovative solutions to complex problems.
I am known for my ability to think outside the box and come up with creative solutions.
I have a keen eye for detail and always strive for perfection in m
- Q3. What you value added to your last organisation
- Ans.
I added value to my last organization by implementing data-driven strategies to improve efficiency and decision-making.
Implemented data analytics tools to optimize processes and identify cost-saving opportunities
Developed KPI dashboards to track performance and make informed business decisions
Led cross-functional teams to successfully launch new products and services
Provided training and mentorship to junior analysts t
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Feb 2021. There were 2 interview rounds.
Focus on industry-specific nuances
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jun 2019. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Configuration Management, data modelling, CI relationships, Problem management process flow, SIAM, integration, cmdb reports, KPIs.
- Q2. General introduction, projects handled in the past,
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